Hi, just thought I'd post a quick picture of the bed I made to suit my Kombi van without taking the seat out and to have space for bike- I decided to make it myself after seeing some of the ridiculous prices that people and companies were charging for what is basically some tubular frame and bed slats all which can be easily found on the web. All that was required was a bit of time and some basic skills. You can use whatever you want as a mattress, whether it be air beds, single mattress, memory foam, yoga mat.